Moving Wall Condition on a Curved Wall

qwe11rty22 · August 24, 2016, 05:06

I want to apply a moving wall condition to a curved surface, simulating part of a curved belt in an airflow.

Can I do this with the moving wall boundary condition without using a UDF? Will the physics be correct?

Or will I have to create a UDF following the profile of the curve to define the directional vectors?

Cheers,

David

vasava · August 24, 2016, 08:41

If you have that surface as wall then yes, you can do it without UDF.

qwe11rty22 · August 24, 2016, 09:11

Thanks for the reply.

Do you know what values should be used for the directional vectors? All 0's?

Im a little confused, as they are in the x,y,z directions only, and a wall element on the curved wall will have, say, a constant x value, and varying y and z values.

David

vasava · August 25, 2016, 01:45

There is also option for rotational motion. There you can input axis-origin and direction.

August 24, 2016, 05:06	Moving Wall Condition on a Curved Wall	#1
qwe11rty22 New Member david Join Date: Feb 2016 Posts: 5 Rep Power: 10	I want to apply a moving wall condition to a curved surface, simulating part of a curved belt in an airflow. Can I do this with the moving wall boundary condition without using a UDF? Will the physics be correct? Or will I have to create a UDF following the profile of the curve to define the directional vectors? Cheers, David

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Natural convection in a closed domain STILL NEEDING help!	Yr0gErG	FLUENT	4	December 2, 2019 00:04
Water subcooled boiling	Attesz	CFX	7	January 5, 2013 03:32
UDF for wall slipping	HFLUENT	Fluent UDF and Scheme Programming	0	April 27, 2011 12:03
Deformation of wall by temperature condition	Jay	FLUENT	0	April 14, 2007 18:06
Multicomponent fluid	Andrea	CFX	2	October 11, 2004 05:12

August 24, 2016, 08:41		#2
vasava Senior Member Paritosh Vasava Join Date: Oct 2012 Location: Lappeenranta, Finland Posts: 732 Rep Power: 22	If you have that surface as wall then yes, you can do it without UDF.

August 24, 2016, 09:11		#3
qwe11rty22 New Member david Join Date: Feb 2016 Posts: 5 Rep Power: 10	Thanks for the reply. Do you know what values should be used for the directional vectors? All 0's? Im a little confused, as they are in the x,y,z directions only, and a wall element on the curved wall will have, say, a constant x value, and varying y and z values. David

August 25, 2016, 01:45		#4
vasava Senior Member Paritosh Vasava Join Date: Oct 2012 Location: Lappeenranta, Finland Posts: 732 Rep Power: 22	There is also option for rotational motion. There you can input axis-origin and direction.